Second Opinion"ALS"
Amyotrophic lateral sclerosis (ALS) is a devastating, progressive neurological disease with no cure. Also known as Lou Gehrig's disease, ALS physically and mentally affects each person differently. In this heartfelt episode, experts present data and Gary Temoyan shares his story, talking about his diagnosis, treatments, progression, and symptom management, which is maximizing his quality of life for as long as possible. D

12:00 pm

Frontline"Two American Families"
Since 1992, Bill Moyers and FRONTLINE have been following the story of two ordinary, hard-working families in Milwaukee - one black, one white - as they spent two decades in an extraordinary battle to keep from sliding into poverty. Two American Families chronicles the struggles of the Neumanns and the Stanleys as they try to hold onto their homes, their jobs, their health insurance, and a future for their children. A remarkable portrait of perseverance, the film raises unsettling questions about the changing nature of the U.S. D

1:30 pm

Crisis of Faith
Narrated by Grammy-winning singer-songwriter Amy Grant, CRISIS OF FAITH examines how slavery and biblical interpretations on its morality divided religious denominations and ultimately, the nation, in the Civil War era. Most Southerners deemed slavery integral to their way of life, and the Bible seemingly reinforced this belief. Christian figures in both the Old Testament and the New Testament never object to, nor do they condemn, the practice. D

2:00 pm

Outdoor Idaho"The CCC In Idaho"
In the 1930s, Idaho was invaded. Roosevelt's Tree Army - the Civilian Conservation Corps - swept into the state's forests, rangelands and parks. Today, veterans of the CCC revisit the trails, bridges, picnic facilities and even a tunnel they constructed. The show reflects on how the CCC changed Idaho and a generation.G

2:30 pm

Dialogue"David Macaulay: Conversations from the Sun Valley Writers' Conference"
Host Marcia Franklin talks with the creator of books that explain how architectural wonders such as pyramids and cathedrals were built.G

NOVA"Ground Zero Supertower"
NOVA returns to Ground Zero to witness the final chapter in an epic story of engineering, innovation, and the perseverance of the human spirit: the completion of One World Trade Center, the skyscraper rising up 104 stories and 1,776 feet from the site where the Twin Towers once stood. In this update of NOVA's "Engineering Ground Zero, " which featured behind-the-scenes access to the struggles of the engineers and architects working at 1 WTC and the National September 11 Memorial and Museum, NOVA goes inside the construction of the new tower's final floors and the installation of its soaring, 800-ton spire and beacon. But 1 WTC isn't the only engineering marvel taking shape here: NOVA goes underground to see the construction of a multi-billion dollar transit center whose sweeping, sinuous design is said to be inspired by the shape of a bird being released from a child's hand. D

6:00 pm

Super Skyscrapers"The Billionaire Building"
Upon completion, the residential tower on Manhattan's 57th Street will rise more than 1,000 feet, making it the tallest building of its kind in the Western Hemisphere and boasting spectacular views of Central Park. This episode follows the teams tasked with creating New York's most luxurious residential skyscraper. Part 4 of 4G

7:00 pm

America Revealed"Made in the U.S.A."
America remains the number one manufacturing nation in the world, and Yul Kwon meets the men and women who create the world's best and most iconic products. He also explores the notion of nuts and bolts evolving into the ideas and information underlying a new economy. Part 4 of 4G

Nightly Business Report
Tonight on Nightly Business Report, Fed Chair Janet Yellen tells Congress the economy has shown recent signs of weakness. We have her outlook and what it might mean for your money. And, Best Buy returns to a profit. D

Super Skyscrapers"The Billionaire Building"
Upon completion, the residential tower on Manhattan's 57th Street will rise more than 1,000 feet, making it the tallest building of its kind in the Western Hemisphere and boasting spectacular views of Central Park. This episode follows the teams tasked with creating New York's most luxurious residential skyscraper. Part 4 of 4G